diff options
| -rw-r--r-- | block/gluster.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/block/gluster.c b/block/gluster.c index d09824d750..54ee9b7d93 100644 --- a/block/gluster.c +++ b/block/gluster.c @@ -340,6 +340,96 @@ out: return ret; } +typedef struct BDRVGlusterReopenState { + struct glfs *glfs; + struct glfs_fd *fd; +} BDRVGlusterReopenState; + + +static int qemu_gluster_reopen_prepare(BDRVReopenState *state, + BlockReopenQueue *queue, Error **errp) +{ + int ret = 0; + BDRVGlusterReopenState *reop_s; + GlusterConf *gconf = NULL; + int open_flags = 0; + + assert(state != NULL); + assert(state->bs != NULL); + + state->opaque = g_malloc0(sizeof(BDRVGlusterReopenState)); + reop_s = state->opaque; + + qemu_gluster_parse_flags(state->flags, &open_flags); + + gconf = g_malloc0(sizeof(GlusterConf)); + + reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename); + if (reop_s->glfs == NULL) { + ret = -errno; + goto exit; + } + + reop_s->fd = glfs_open(reop_s->glfs, gconf->image, open_flags); + if (reop_s->fd == NULL) { + /* reops->glfs will be cleaned up in _abort */ + ret = -errno; + goto exit; + } + +exit: + /* state->opaque will be freed in either the _abort or _commit */ + qemu_gluster_gconf_free(gconf); + return ret; +} + +static void qemu_gluster_reopen_commit(BDRVReopenState *state) +{ + BDRVGlusterReopenState *reop_s = state->opaque; + BDRVGlusterState *s = state->bs->opaque; + + + /* close the old */ + if (s->fd) { + glfs_close(s->fd); + } + if (s->glfs) { + glfs_fini(s->glfs); + } + + /* use the newly opened image / connection */ + s->fd = reop_s->fd; + s->glfs = reop_s->glfs; + + g_free(state->opaque); + state->opaque = NULL; + + return; +} + + +static void qemu_gluster_reopen_abort(BDRVReopenState *state) +{ + BDRVGlusterReopenState *reop_s = state->opaque; + + if (reop_s == NULL) { + return; + } + + if (reop_s->fd) { + glfs_close(reop_s->fd); + } + + if (reop_s->glfs) { + glfs_fini(reop_s->glfs); + } + + g_free(state->opaque); + state->opaque = NULL; + + return; +} + #ifdef CONFIG_GLUSTERFS_ZEROFILL static coroutine_fn int qemu_gluster_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, int nb_sectors, BdrvRequestFlags flags) @@ -630,6 +720,9 @@ static BlockDriver bdrv_gluster = { .instance_size = sizeof(BDRVGlusterState), .bdrv_needs_filename = true, .bdrv_file_open = qemu_gluster_open, + .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, + .bdrv_reopen_commit = qemu_gluster_reopen_commit, + .bdrv_reopen_abort = qemu_gluster_reopen_abort, .bdrv_close = qemu_gluster_close, .bdrv_create = qemu_gluster_create, .bdrv_getlength = qemu_gluster_getlength, @@ -654,6 +747,9 @@ static BlockDriver bdrv_gluster_tcp = { .instance_size = sizeof(BDRVGlusterState), .bdrv_needs_filename = true, .bdrv_file_open = qemu_gluster_open, + .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, + .bdrv_reopen_commit = qemu_gluster_reopen_commit, + .bdrv_reopen_abort = qemu_gluster_reopen_abort, .bdrv_close = qemu_gluster_close, .bdrv_create = qemu_gluster_create, .bdrv_getlength = qemu_gluster_getlength, @@ -678,6 +774,9 @@ static BlockDriver bdrv_gluster_unix = { .instance_size = sizeof(BDRVGlusterState), .bdrv_needs_filename = true, .bdrv_file_open = qemu_gluster_open, + .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, + .bdrv_reopen_commit = qemu_gluster_reopen_commit, + .bdrv_reopen_abort = qemu_gluster_reopen_abort, .bdrv_close = qemu_gluster_close, .bdrv_create = qemu_gluster_create, .bdrv_getlength = qemu_gluster_getlength, @@ -702,6 +801,9 @@ static BlockDriver bdrv_gluster_rdma = { .instance_size = sizeof(BDRVGlusterState), .bdrv_needs_filename = true, .bdrv_file_open = qemu_gluster_open, + .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, + .bdrv_reopen_commit = qemu_gluster_reopen_commit, + .bdrv_reopen_abort = qemu_gluster_reopen_abort, .bdrv_close = qemu_gluster_close, .bdrv_create = qemu_gluster_create, .bdrv_getlength = qemu_gluster_getlength, |